Chemical Engineering Basics - Practice Test

[#386] Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

(A) $$frac{1}{{ ext{k}}}$$

(B) k

(C) k 2

(D) $$frac{1}{{{{ ext{k}}^2}}}$$

Correct Answer

(B) k

[#387] Value of a material is usually considered as a relationship between

(A) Cost and profit

(B) Utility and appearance

(C) Utility and cost

(D) Reliability and utility

Correct Answer

(C) Utility and cost

[#388] Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

(A) Malleable iron

(B) Grey cast iron

(C) Chilled cast iron

(D) White cast iron

(E) Malleable iron

(F) Grey cast iron

(G) Chilled cast iron

(H) White cast iron

Correct Answer

(A) Malleable iron
(E) Malleable iron

[#389] Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

(A) Output & fineness

(B) Velocity

(C) Both A & B

(D) None of these

Correct Answer

(C) Both A & B

[#390] Satellites burn off during re-entry to earth's atmosphere, because of the

(A) Combustion with air

(B) Gravitational pull by earth

(C) Friction with earth's atmosphere

(D) Loss in weight of the satellite

Correct Answer

(C) Friction with earth's atmosphere

Chemical Engineering Basics - Study Mode

[#386] Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

Correct Answer

[#387] Value of a material is usually considered as a relationship between

Correct Answer

[#388] Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

Correct Answer

[#389] Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

Correct Answer

[#390] Satellites burn off during re-entry to earth's atmosphere, because of the

Correct Answer